Their goal: Burn calories, improve cardio, and keep the lights on. That’s because this month, Clif Bar retrofitted 12 spin class bikes with generators to turn pedal power into usable energy for the building.

Clif Bar Pedal-Powered Headquarters

The company expects the bikes to generate about 300 kwh of electricity. That’s enough to power the average home for 10 days, the brand claimed.

That’s not going to make a huge dent in the HQ’s power demands, but the brand said it’s less about the power it generates, and more about changing habits and awareness.

“These spin bikes are more intended to spark a dialogue and encourage Clif Bar and Company employees to think about how they are consuming electricity within their own lives and the environmental benefits of riding bikes,” said a representative for the brand.